Abstract
Theoretical analysis of the wavelength tuning characteristics shows that the carrier effect in /spl lambda//4-shifted DFB lasers with in-phase complex grating can produce a large red shift by a self-suppressing mechanism of the spatial hole-burning effect while maintaining stable single-mode operation. The FM response of these lasers can thus avoid having a dip at lower modulation frequencies, where the thermal red shift opposes the carrier blue shift of conventional lasers. An in-phase complex-coupled /spl lambda//4-shifted DFB laser with a ridge structure is described that gives a flat FM response from 10 kHz to over 20 GHz (3-dB bandwidth) achieved by using the self-suppressing mechanism of the spatial hole-burning effect. This bandwidth is the widest ever achieved for frequency modulation. >
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Journal of Selected Topics in Quantum Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
